13305913 has 4 divisors (see below), whose sum is σ = 13735168. Its totient is φ = 12876660.

The previous prime is 13305899. The next prime is 13305953. The reversal of 13305913 is 31950331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31950331 = 7 ⋅4564333.

It is a cyclic number.

It is not a de Polignac number, because 13305913 - 2⁵ = 13305881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13305953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214581 + ... + 214642.

It is an arithmetic number, because the mean of its divisors is an integer number (3433792).

Almost surely, 2^13305913 is an apocalyptic number.

It is an amenable number.

13305913 is a deficient number, since it is larger than the sum of its proper divisors (429255).

13305913 is an equidigital number, since it uses as much as digits as its factorization.

13305913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429254.

The product of its (nonzero) digits is 1215, while the sum is 25.

The square root of 13305913 is about 3647.7271005381. The cubic root of 13305913 is about 236.9635567410.

The spelling of 13305913 in words is "thirteen million, three hundred five thousand, nine hundred thirteen".